Self-locking attachment for railway-switch handles



C. FORTH.

SELF LOCKING ATTACHMENT FOR RAILWAY SWITCH HANDLES.

APPLICATION FILED MAR. 6 I917- Batented Sept. 28, 1920;.

m; HAN 4011A.

,. 945 7545/12 & LE 1 CHARLES FORTH, OF OTTAWA, ONTARIO, CANADA, ASSIGNOR TO THE FLEXIBLEv METAL HOSE COMPANY, LIMITED, 01E OTTAWA, ONTARIO, CANADA.

' SELF-LOCKING. ATTACHMENT FOR RAILWAY-SWITCH. HANDLES.

To all whom it may concern:

Be it known that 1, CHARLES FORTH, a

citizen of the United States of America,

and a resident of 26 Wellington street, in the city of Ottawa, in the Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Self-Locking Attachments for Railway- Switch Handles, of which the followingis a full description.

This invention relates to improvements in self locking attachment for railway switch handles, and'the objects of the invention are to provide a simple and effective form of attachment which may be applied to railway switch handles, by means of which the handle may be locked in closed position A further object is to construct this device of few and simple parts, each one being adapt ed to perform the functions required of it. The invention consists essentially of the improved construction hereinafter described in detail in the accompanying specification and drawings.

In the drawings, I Figure 1 is a side view, partially in section, of an embodiment of the invention.

Fig. 2 is a plan view of the same. Fig. 3 is a section on the line 22 of Fi 1. V

Beferring to the drawings, A represents a switchhandle of'any well known type being formed with bifurcated ends 10 and 11 connected by a cross bar 12. B represents the tongue of the switch stand, having the usual aperture 13 therein. C represents the casing forming part of my improved attachment adapted to fit over the handle A and being provided with clamping means, by

which it may be clamped in position thereon.

tween the projection and the end of the casing for retaining the bolt normally in locked position. 1

The clamping means I have shown, include tongues 1% and 15 adapted to extend on 0pposite sides of the cross bar 12. A set screw 16 extends through the tongue 14, and a clamping bolt 17 extends from an extension 18 on the casing, the head ofwbich bolt is adapted to bear against the handle as shown.

Specification of Letters Patent.

VVithin the casing is pivotally mounted a bolt spinde 19 having an operating, handle dle is formed with a squared portion 21 on locking bolt includes an arm 23 having a projection 24 designed to enter the aper- 'ture 13 in the tongue B. 'The bolts nor v Patented Sept. 28, 1920. Application filed March 6, 1917; Serial No. 152,750, 7

'or lever 20 at the top thereof. This spinwhich the locking bolt D is mounted. This, 7

locking bolt. The projection 24 is formed with suitable beveled edges whereby it will slip into engaged position-after the manner of a latch. l 1

As many changes could'be made in the above description and many apparently widely difierent embodiments of my invention within the scope of the claim constructed without departing from the spirit or scope thereof, it is intended that alllmatter contained in the accompanying specification and drawings shallbe interpreted as illustrative and not in a limited sense. What I claim as my invention is: In a device of the class described, the

1 combination with a switch handle and the tongue ofa switch stand, of a casing .secured to the switch handle and covering the end of the tongue, 'a bolt spindle pivotally mounted vertically within the casing, and

having an offset operating handle, said spindle having, a squared portion, a laterally movable bolt engaging with the squared portion, of the spindle and operated thereby, and having an offset projection provided with beveled edges to facilitate automatic engagement. with the said tongue, a projection on the bolt and spring means be- In witness whereof I have hereuntoset my hand in the presence of a witness.

CHARLES FORTH. 'Witnessz,

RUSSEL B. BRAIT. 

